last night my boyfriend and i had sex and ever since i've had cramping and back aches... Since i became pregnant (i'm just about 9 weeks now) i've had cramping and back pain on and off but nothing that's lasted this long... could it have been i was a little too active or maybe the position i was in? should i be concerned about this or is it normal? this is my first pregnancy so i'm not totally sure!

Thanks guys!!!