Freaking out over possible needlestick

I was giving heparin to a very thin woman yesterday. Her arms were unsuitable so I went to abdomen. To her a good amount of skin I of course did a two finger pinch. When I inserted the needle I could feel the needle against my thumb while in the skin. I only felt the sensation of the needle in the tissue and I did not feel a prick, stab, etc. I inspected my glove afterwards and it was intact, no holes. I inspected my skin, no bleeding. I washed my hands and thought I was overreacting. Now it's the next day and I'm going bananas and having anxiety over this, thinking what if I did stick myself but didn't realize it? I never felt a prick or poking sensation, but the feeling of the needle in skin scared me enough. Now I'm doubting myself, thinking maybe it did poke me? When inspecting my skin today I have an area that could be sore on my thumb, but I have a feeling my mind is playing tricks. What do I do? I'm freaking out!?!