i had unprotected sex about 5 months ago i was really worried i was pregnant at first because i was getting loads of the signs so i brought a test. the first test i did i think i did wrong so i used the secound one the next day but i had a little bit to drink that day and later i read your not suposed to test when you have alcohol in you system so i used the 3rd test two days later and that one was negitive like the others were also. so for a while i thougt there was no chance i was pregnant as my periods have been regular as well. then about two weeks ago i started to feel movements that i think feel like kicks it happens alot.i keep getting loads of back ache and head aches. and ive put on weight very fast in the last month and my breastes have got huge.but all my periods have been regular so i no it might sound i bit silly for me to think this what with the tests being negitive as well but the sighs are really worrying me should i do another test ??