Confused!!

[RocketPockets]

Haven't posted here before and not 100% is this is the right place!
My husband and I aren't currently ttc but not using hormonal contraception only condoms. We are really careful 99.9% of the time. I finished my period on 31st march had a little bit of spotting on 1st April, I have a short cycle and my fertile week generally starts around 5 days after this day of spotting and I sometimes get cramps when I ovulate especially on my c section scar. We dtd on Saturday and today I've been getting cramps quite bad like I would when I ovulate which I also had last week. Could this be implantation cramps or is it too soon for that? Or should I put it down to ovulation? Sorry if it's confusing I'm at work so typing quickly!

[physicskate]

Generally implantation happens 6-12 days after ov. I think the mode average being 7 days.