1995 Ford Probe This car is HOT

1995 Ford Probe SE, 4 cyl, manual with 163,000 miles (still 38 MPG, I love this car). About 2 months ago I started noticing a antifreeze level drop and one day the water pump seal blew out. I had to travel 100 miles on the highway from exit to exit to get water at gas stations to keep it cooled as best as I could. I got the car home and replaced the water pump. The car seemed to run fine until I noticed white smoke out the exhaust while on my way back up the 100 mile run. I figured it was possibly a cracked gasket or head, but needing a quick fix I bought the pour in repair stuff from the auto parts place. It worked! Car is find and dandy! I checked the antifreeze level and noticed a massive pressure build up when I released the cap but the fluid was fine. I ran it like that until I could get to a parts store and get a cap, but low and behold BOOM. I blew a water hose (too much pressure). I replaced the hose and the cap. The car has been running VERY hot ever since. I've replaced the radiator and thermostat thinking those might be the problem but still nothing. I'm still not losing fluids at all, nothing out the exhaust, nothing in the oil, but it's running at just about the red on the temperature guage. A dozen people have told me it's the head or the block that are bad (I'm not a mechanic but that makes no sense since I'm not losing fluid and I have good heat inside). I'm thinking that when that pressure got to be so bad that it blew a hose it might have ruined my brand new water pump, but I have no idea. Before I start ripping apart the engine (paying someone else to do it) and dumping more and more cash into this I thought I'd ask. What could be wrong? New water pump, radiator cap, radiator, thermostat so far. I know eventually I'm going to have to pull it apart and check the head and gasket because it did leak and I don't really trust that sealer stuff, but I'm low on time and cash at the moment and I really don't want to replace something at this point in time that can wait until finances are better. Thanks for any help or suggestions!