Pinching pain behind belly button

Abbie
I had a miscarriage starting with spotting 1st May and heavy bleeding admitted to hospital 8th May, stopped bleeding 16th May and had sex 19th and 22nd May. I am having a pinching feeling just behind my belly button which I'm fairly sure I had when I conceived the last time but can't remember for certain. 
I did a HPT 3 days ago and about 6 days ago and both were faint positive, which I believe is left over from the miscarriage. 
What does everyone think? 
Things are difficult at home since the miscarriage and my husband has been questioning if he even wants children although I believe he is grieving and struggled with watching me go through the traumatic experience and is scared of the possibility of it happening again. We have a lot of issues to work through but I would be delighted to be pregnant again if it were to happen. 
X