For a bit of context, a couple weeks ago I went to a party with a group of old friends I haven't been friends with in 4 years. We were all friendly enough and afterwards I thought it ended on good terms. 

My plans for new years just got cancelled and so I'm interested to see if they're going to be hanging out again, and asking if I can join- but it feels like it'd be awkward if I, after barely talking to them for four years, ask what they're doing and if I can invite myself along. 

I've been agonising over this for like an hour now, all those pesky 'what if's keep holding me up. What if they don't want me, what if they don't even have plans, etc. Basically I guess I just need someone to tell me it's not as big a deal as I think it is- or, alternatively, is there a better way of going about this?