@Eliza9919
I think it's rude and disrespectful to ignore messages, when you have been online and obviously seen you have them. Not texting back for days is rude too.
I kind of agree with this, AND the post by @poopypants (from 10.55 today.)
It has always bugged me a bit, that people see and read your messages, (and it shows as 'seen' or 'read,') then they just pop off and don't reply to it. Even just saying 'bit busy now, will respond later this evening' will do!
People accuse the individuals who get irked by people not responding back when they have seen the message (or even taking a DAY to respond,) of being needy, clingy, insecure etc.. And maybe some people are (a bit.) And it is easy to think someone doesn't want to speak to you, or they didn't get the message even (if you don't have a 'seen message' kind of facility - if it was just a text.)
I have never 'got' why people don't respond when they have seen a message. I mean, some say these people are busy with other people, or work, or whatever, but if that is so, then how and why are they finding the time to notice, scroll through, and open, and read the messages? Surely if they can take the time to do all this, they can spend, 5 seconds sending a quick message saying 'busy now sorry, I will message you this evening.' ??? 
I have messaged people, and know they have seen my message, and they don't respond. So I think they must be busy... Then later that day, (3-4 hours later,) I go on twitter and facebook, (to check my messages and posts and tweets and replies,) and I see them on twitter, posting tweets, tweeting other people, and responding to peoples posts on facebook, and uploading pics onto instagram..., but they have still not answered my message.
I have often thought think 'did they see my message at all, or is it just that I am pretty low on their list of priorities, and they will message me back when they have messaged all the people who are more important than me?'
I guess I am a bit insecure, and have often assumed when people don't respond, that it's because I am not that important to them. I don't know why responding to me is left for 10 hours later, when they are are finding the time to post on instagram, post on twitter, and put multiple facebook messages on.
Anyway....... A while back (maybe 4-5 months or so ago,) I decided to stop getting so wound up, and messaging people back after an hour to see if said person had got my message, and I just waited for them to respond. I basically started to chill out a bit, and not look to see if the person had been on the internet doing other stuff, and waited for them to get back to me. And they always do. Sometimes not for 8-12 hours, sometimes within an hour.
I have felt a bit better since I stopped getting really uptight about it. I also started doing the same to them. Waiting 6-8 hours before responding - unless it was urgent.
Weirdly, several people I have been doing this to, have messaged me after an hour or so, and said 'did you get my message, you haven't responded!!!'' I think, well YOU take half a day to a day to respond to me sometimes LOL!
At least I know it's not just me who is a bit of a stresshead! 
@Rainyday2019
As for the OP; yeah maybe rein it in a bit or your will chase you OH away. I hope you find peace, and feel less insecure. I know it ain't easy!!! I am still working on me. And I am getting better. 
It is easy to come across as overbearing and clingy and a bit obsessive, when it's often that you are just a bit insecure and worried the person doesn't want to bother with you. Good luck !!! 