Do i need more testing or need testing ?
I think you're in a bit of a muddle. I would suggest that you go and have a full set of tests at 28 days from the last event and to include an HIV DUO test within that.
I would also suggest you take the opportunity to have a chat with the doctor or nurse re STD's etc. Make sure you get yourself immunised against Hep A and B. Use a condom for penetration in future.
best wishes, Sean