Do you think my birth control would be ok if i left it in its package on my dresser not above 70 degrees but i had heater on and it was next to windo?

Yes: Yes okay. Some people live in hot climates during summer and don't have to put their birthcontrol in the fridge. Unless the pack was sitting directly on top of the heater i think you'll be perfectly fine. Birth control pills - when used perfectly- prevent pregnancy 94% of the time. So even perfect conditions not 100%. If you're at all worried use condoms as back up. Good luck, hope helps!