Plz need ur help with pregnant or not plz soooo confused?

I know this is confusing trust me so do i anyways.....my lmp was 17may than nxt one was 18 june but it just wasnt rite and was late period was shorter n lighter....so i took a few hpt 2 neg 1 positive....the positive came b4 the neg after i got my period (18 june) it is not unusual for me to get bleeding on the period time but still pregnant (hormones arent high enough to stop the period) so im unsure i had all the symptoms of being pregnant about 2wks before my period on 18 june.... but now im getting very tired, tingling boobs but doesnt hurt when touched, increased in cm, bloating, lower stomach cramps n very wierd feelings, upset over the smallest things that result in crying for the stupidest things, sometimes nausea......so the positive i got i took as a negitive because the other tests were negitive..... is this in my head??? Do u think i could be pregnant???? I just dont wanna waste my money on another test just to get another neg... plz give me ur opinions.....thanx in advance